diff --git a/0814/README.md b/0814/README.md
index 64d77f407af5e55212bbc2213ef589a144939fc1..e0a1ac3636dc9038474b1c2a39ee6386b8467ca8 100644
--- a/0814/README.md
+++ b/0814/README.md
@@ -1,6 +1,7 @@
 # led thread
 
 ### led_main
+
 ```
 ./led_main 
 led main task start
diff --git a/0814/led_main b/0814/led_main
deleted file mode 100755
index ef2b5dc96071f2b1651ada0aef3b1a7cbac10ece..0000000000000000000000000000000000000000
Binary files a/0814/led_main and /dev/null differ
diff --git a/0814/led_main.txt b/0814/led_main.txt
deleted file mode 100644
index 1b414cbef27d806f23685785f1ef8640b718e06b..0000000000000000000000000000000000000000
--- a/0814/led_main.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-./led_main 
-led main task start
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-red ON
-red OFF
-led main task end
-led red blinked 10 times
diff --git a/0814/led_main_1_5.txt b/0814/led_main_1_5.txt
deleted file mode 100644
index 4fb519c9a2997858ea8a58825dad1ebb47fae57b..0000000000000000000000000000000000000000
--- a/0814/led_main_1_5.txt
+++ /dev/null
@@ -1,37 +0,0 @@
-./led_main 1 5 
-led main task start
-red ON
-led blue task start
-blue ON
-red OFF
-blue OFF
-red ON
-red OFF
-blue ON
-red ON
-red OFF
-blue OFF
-red ON
-red OFF
-blue ON
-red ON
-red OFF
-blue OFF
-red ON
-red OFF
-blue ON
-red ON
-red OFF
-blue OFF
-red ON
-red OFF
-blue ON
-red ON
-red OFF
-blue OFF
-red ON
-red OFF
-led blue task end
-led main task end
-led red blinked 10 times
-led blue blinked 5 times
diff --git a/0814/led_main_2_3.txt b/0814/led_main_2_3.txt
deleted file mode 100644
index afdc4758a797e18a7fed75b59f5602f54aff9e41..0000000000000000000000000000000000000000
--- a/0814/led_main_2_3.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-./led_main 2 3 
-led main task start
-red ON
-led orange task start
-orange ON
-red OFF
-red ON
-orange OFF
-red OFF
-red ON
-red OFF
-orange ON
-red ON
-red OFF
-red ON
-orange OFF
-red OFF
-red ON
-red OFF
-orange ON
-red ON
-red OFF
-red ON
-orange OFF
-red OFF
-red ON
-red OFF
-led orange task end
-red ON
-red OFF
-led main task end
-led red blinked 10 times
-led orange blinked 3 times
diff --git a/0814/led_main_3_3.txt b/0814/led_main_3_3.txt
deleted file mode 100644
index cdf3c675d3c0b899f4675ac980ca5ed9d80c752b..0000000000000000000000000000000000000000
--- a/0814/led_main_3_3.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-./led_main 3 3 
-led main task start
-red ON
-led orange task start
-orange ON
-led blue task start
-blue ON
-red OFF
-red ON
-blue OFF
-orange OFF
-red OFF
-blue ON
-red ON
-red OFF
-orange ON
-blue OFF
-red ON
-red OFF
-blue ON
-red ON
-orange OFF
-red OFF
-blue OFF
-red ON
-red OFF
-orange ON
-led blue task end
-red ON
-red OFF
-red ON
-orange OFF
-red OFF
-red ON
-red OFF
-led orange task end
-red ON
-red OFF
-led main task end
-led red blinked 10 times
-led blue blinked 3 times
-led orange blinked 3 times
diff --git a/README.md b/README.md
index 977a439e05f95fd7b0b66b75f980ce56092d6d7c..6cc14e176bc3588dfa522c246752bffa4ba84e4d 100644
--- a/README.md
+++ b/README.md
@@ -346,4 +346,170 @@ identifier를 통해 여러 개의 파일들을 간단하게 부를 수 있는 
 
 # ledTest
 
-![letTest](./Images/ledTest.jpg)
\ No newline at end of file
+![letTest](./Images/ledTest.jpg)
+
+# led thread
+
+### led_main
+
+```
+./led_main 
+led main task start
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+red ON
+red OFF
+led main task end
+led red blinked 10 times
+```
+
+![](./Images/led_main.mp4)
+
+### led_main 1 5
+
+```
+./led_main 1 5 
+led main task start
+red ON
+led blue task start
+blue ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+red OFF
+blue OFF
+red ON
+red OFF
+led blue task end
+led main task end
+led red blinked 10 times
+led blue blinked 5 times
+```
+
+![](./Images/led_main_1_5.mp4)
+
+### led_main_2_3
+
+```
+./led_main 2 3 
+led main task start
+red ON
+led orange task start
+orange ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+orange ON
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+orange ON
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+led orange task end
+red ON
+red OFF
+led main task end
+led red blinked 10 times
+led orange blinked 3 times
+```
+
+![](./Images/led_main_2_3.mp4)
+
+### led_main_3_3
+
+```
+./led_main 3 3 
+led main task start
+red ON
+led orange task start
+orange ON
+led blue task start
+blue ON
+red OFF
+red ON
+blue OFF
+orange OFF
+red OFF
+blue ON
+red ON
+red OFF
+orange ON
+blue OFF
+red ON
+red OFF
+blue ON
+red ON
+orange OFF
+red OFF
+blue OFF
+red ON
+red OFF
+orange ON
+led blue task end
+red ON
+red OFF
+red ON
+orange OFF
+red OFF
+red ON
+red OFF
+led orange task end
+red ON
+red OFF
+led main task end
+led red blinked 10 times
+led blue blinked 3 times
+led orange blinked 3 times
+```
+
+![](./Images/led_main_3_3.mp4)
\ No newline at end of file